环氧沥青制备和性能的研究

发布时间：2018-06-03 18:45

  本文选题：环氧沥青 + 环氧体系含量　； 参考：《长安大学》2015年硕士论文

【摘要】：环氧沥青主要由环氧树脂、固化剂和沥青三部分组成,是一种立体网络状结构的不可逆的热固性物质,不仅具有良好的力学性能、高温稳定性和粘结性、且具有良好的耐腐蚀性等特性,彻底改变了传统沥青的高温塑性的特点。环氧树脂体系质量占环氧沥青质量不变的基础上,对环氧沥青拉伸强度进行分析研究,确定环氧树脂与固化剂的最佳质量之比为1:1;在环氧沥青质量不变的基础上,调节环氧树脂体系的质量,通过对环氧沥青拉伸强度和断裂延伸率的变化规律进行分析,确定了环氧树脂体系质量占总质量为45%,通过对环氧沥青进行力学测试、布什粘度仪试验和荧光显微镜分析,结果表明;在环氧沥青质量不变的基础上,逐渐增加环氧树脂体系的质量,其拉伸强度逐渐增加,断裂延伸率逐渐降低;当环氧体系质量增加到45%时,环氧沥青体系发生相的转换,环氧树脂首次变为连续相,沥青是分散相;环氧沥青的粘度随着反应温度的增加而增加,在150℃条件下,体系的粘度达到1Pa·s需要55min,满足施工要求,并且体系的粘度可以随着实际需要进行调整。其次,根据国内外关于环氧沥青矿质混合料设计方法,结合现阶段本课题研究的基础,确定了环氧沥青矿质混合料的级配。通过分析环氧沥青混合料的基本特点,采用马歇尔稳定度的设计方法,确定了环氧沥青混合料的最佳油石比为6.0%。最后通过高温车辙试验、低温弯曲试验、浸水马歇尔试验、冻融劈裂试验、粘附性试验和耐腐蚀性试验,对环氧沥青混合料的路用性能进行评价。
[Abstract]:Epoxy asphalt is mainly composed of epoxy resin, curing agent and asphalt. It is an irreversible thermosetting material with three-dimensional network structure. It not only has good mechanical properties, high temperature stability and adhesion. And has the good corrosion resistance and so on characteristic, completely changed the traditional asphalt high temperature plasticity characteristic. Based on the analysis of the tensile strength of epoxy asphalt, the optimum mass ratio of epoxy resin to curing agent is 1: 1. On the basis of the same quality of epoxy resin and epoxy asphalt, the tensile strength of epoxy asphalt is determined to be 1: 1. By adjusting the quality of epoxy resin system and analyzing the change of tensile strength and elongation at break of epoxy asphalt, the mass of epoxy resin system is determined to be 45%, and the mechanical test of epoxy asphalt is carried out. The results of Bush viscometer test and fluorescence microscope analysis show that the quality of epoxy resin system increases gradually and the tensile strength increases and the elongation at break decreases gradually on the basis of the constant mass of epoxy asphalt. When the mass of epoxy system is increased to 45%, the phase transition occurs in the epoxy asphalt system, the epoxy resin becomes a continuous phase for the first time, the asphalt is a dispersed phase, the viscosity of epoxy asphalt increases with the increase of reaction temperature, and the viscosity of epoxy asphalt increases at 150 鈩，

本文编号：1973805